Hi guys, I recently got the rMBP 10,1 model, it has two graphic cards:
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GK107M [GeForce GT 650M Mac Edition] (rev a1) I'm running linux 3.10-rc7 . The nvidia works with nouveau, but I'd prefer to switch the nvidia off altogether and use the intel GPU. So far I arrived at the point where I disabled X11, mounted debugfs and tried the vgaswitcheroo. With the nvidia still in operation, I see the console. Unfortunatelly, I end up with a black screen after I run the following command to switch to the intel GPU: echo IGD > /sys/kernel/debug/vgaswitcheroo/switch If I try to switch back to the nvidia card (using echo DIS > ...), the screen remains black. This state persists until reboot. I suspect [1] is the same bug, none of the hints there helped. Can you please give me any hint/patch/idea/... how to continue? Thank you! [1] https://bugs.freedesktop.org/show_bug.cgi?id=61115 Best regards, Marek Vasut
